That seems to be what we get out of this deal --- the portion of Mexico's population that it's elite class has decided must go --- nothing else in exchange to pay for them.
Obviously Vicente Fox doesn't believe these people are useful in building an economy or he would want some of his citizens to stay home and build that place up. And there is no limit to Fox's demands --- he brags that one-fifth of Mexico's citizens are already living in the USA --- yet that isn't nearly enough --- it's constantly more, more, more. Two-fifths won't be enough, one-half won't be enough.
My last visit to ER, my insurance co owed 1200 bucks (costs me 700 a month). Pedro in cubicle next tome walked out owing nothing, had a beeeeg smile on his face. Try that in Mexico.